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A comprehensive study on thermal conductivity of the lithium‐ion battery
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-02-03 , DOI: 10.1002/er.5016 Lichuan Wei 1, 2 , Zhao Lu 1 , Feng Cao 1 , Liyu Zhang 3 , Xi Yang 3 , Xiaoling Yu 1 , Liwen Jin 3
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-02-03 , DOI: 10.1002/er.5016 Lichuan Wei 1, 2 , Zhao Lu 1 , Feng Cao 1 , Liyu Zhang 3 , Xi Yang 3 , Xiaoling Yu 1 , Liwen Jin 3
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The reliable thermal conductivity of lithium‐ion battery is significant for the accurate prediction of battery thermal characteristics during the charging/discharging process. Both isotropic and anisotropic thermal conductivities are commonly employed while exploring battery thermal characteristics. However, the study on the difference between the use of two thermal conductivities is relatively scarce. In this study, the isotropic and anisotropic thermal conductivities of the four commercially available lithium‐ion batteries, ie, LiCoO2, LiMn2O4, LiFePO4, and Li (NiCoMn)O2, were reviewed and evaluated numerically through the heat conduction characteristics inside the battery. The results showed that there are significant differences in the temperature distribution in the battery caused by the isotropic and anisotropic thermal conductivities, which could affect the layout and cooling effectiveness of battery thermal management system. Furthermore, the effective thermal conductivities of porous electrodes and separator were determined to establish thermal conductivity bounds of lithium‐ion batteries combined with the thicknesses of battery components. The thermal conductivity bounds could be applied to evaluate the rationality of the thermal conductivity data used in battery thermal models.
中文翻译：
锂离子电池导热系数的综合研究
锂离子电池可靠的导热性对于准确预测充电/放电过程中的电池热特性至关重要。在研究电池的热特性时，通常同时使用各向同性和各向异性热导率。但是，关于两种热导率的使用差异的研究相对较少。在这项研究中，四种市售锂离子电池的各向同性和各向异性热导率，即LiCoO 2，LiMn 2 O 4，LiFePO 4和Li（NiCoMn）O 2通过电池内部的导热特性对其进行了数值审查和评估。结果表明，各向同性和各向异性热导率引起的电池温度分布存在显着差异，这可能会影响电池热管理系统的布局和冷却效率。此外，确定了多孔电极和隔板的有效导热系数，以建立锂离子电池的导热系数边界并结合电池组件的厚度。可以将热导率界限应用于评估电池热模型中使用的热导率数据的合理性。
更新日期：2020-02-03
中文翻译：
锂离子电池导热系数的综合研究
锂离子电池可靠的导热性对于准确预测充电/放电过程中的电池热特性至关重要。在研究电池的热特性时，通常同时使用各向同性和各向异性热导率。但是，关于两种热导率的使用差异的研究相对较少。在这项研究中，四种市售锂离子电池的各向同性和各向异性热导率，即LiCoO 2，LiMn 2 O 4，LiFePO 4和Li（NiCoMn）O 2通过电池内部的导热特性对其进行了数值审查和评估。结果表明，各向同性和各向异性热导率引起的电池温度分布存在显着差异，这可能会影响电池热管理系统的布局和冷却效率。此外，确定了多孔电极和隔板的有效导热系数，以建立锂离子电池的导热系数边界并结合电池组件的厚度。可以将热导率界限应用于评估电池热模型中使用的热导率数据的合理性。
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